Roe
Experienced Member
I've found a problem, but I'm uncertain how it could cause this problem.
I connected a scope to the system, and noticed a problem with the +5V power supply. I'll figure out how to capture the waveform and post it tonight, but...
There is some ringing in the 5v supply, for lack of better words. 5v is running between 4.4 and 5.6 volts, with a waveform pattern like this ( read top to bottom )
!
!
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-
!
!
It's a poor description, but it looks to me like maybe a weak capacitor or over/under voltage regulator.
I imagine an edge sensitive signal could be messed up by something like this...
I connected a scope to the system, and noticed a problem with the +5V power supply. I'll figure out how to capture the waveform and post it tonight, but...
There is some ringing in the 5v supply, for lack of better words. 5v is running between 4.4 and 5.6 volts, with a waveform pattern like this ( read top to bottom )
!
!
-----------
--------
---
-
!
!
It's a poor description, but it looks to me like maybe a weak capacitor or over/under voltage regulator.
I imagine an edge sensitive signal could be messed up by something like this...